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The Na-O anticorrelation in horizontal branch stars - IV. M 22

R. G. Gratton, S. Lucatello, A. Sollima, E. Carretta, A. Bragaglia, Y. Momany, V. D’Orazi, S. Cassisi and M. Salaris

A&A, 563 (2014) A13

DOI: https://doi.org/10.1051/0004-6361/201323101

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